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pertinacious

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adjective per·ti·na·cious \ˌpər-tə-ˈnā-shəs\

Definition of pertinacious

  1. 1 a :  adhering resolutely to an opinion, purpose, or design b :  perversely persistent

  2. 2 :  stubbornly tenacious

pertinaciously

adverb

pertinaciousness

noun

pertinacity

play \-ˈna-sə-tē\ noun


Examples of pertinacious in a sentence

  1. <a pertinacious little boy who was determined to catch and collect reptiles>

  2. <a pertinacious salesman who would simply not take No! for an answer>



Did You Know?

If you say "pertinacious" out loud, it might sound familiar. That may be because if you take away the word's first syllable, you're left with something very similar to the word tenacious, which means "tending to adhere or cling." The similarity between "pertinacious" and "tenacious" isn't mere coincidence; both words derive from "tenax," the Latin word for "tenacious," and ultimately from the verb tenēre, meaning "to hold." Another descendant of "tenēre" is "tenure," a word that is typically used of the right to hold a job (especially a teaching position) for as long as desired.

Origin and Etymology of pertinacious

Latin pertinac-, pertinax, from per- thoroughly + tenac-, tenax tenacious, from tenēre


First Known Use: 1626

Synonym Discussion of pertinacious

obstinate, dogged, stubborn, pertinacious, mulish mean fixed and unyielding in course or purpose. obstinate implies usually an unreasonable persistence <an obstinate proponent of conspiracy theories>. dogged suggests an admirable often tenacious and unwavering persistence <pursued the story with dogged perseverance>. stubborn implies sturdiness in resisting change which may or may not be admirable <a person too stubborn to admit error>. pertinacious suggests an annoying or irksome persistence <a pertinacious salesclerk refusing to take no for an answer>. mulish implies a thoroughly unreasonable obstinacy <a mulish determination to have his own way>.

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